FIX: SQL-SELECT into Array Causes Illegal Operation

• Microsoft Visual FoxPro for Windows, version 5.0

SYMPTOMS

Using a SQL-SELECT statement to populate an array from a FoxPro 2x table containing deleted records with DELETED set on causes the operating system to close Visual FoxPro 5.0.

When running under Windows 95, the following error appears:

This program has performed an illegal operation and will be shut down.

An application error has occurred and an application error log is being generated.
VFP.exe
Exception: access violation <error number>, Address: <memory address>.

RESOLUTION

Do not issue a SET DELETED ON command and simply rewrite the SQL-SELECT statement, as in the following example:

   SELECT * FROM ZTEST INTO ARRAY Zjunk WHERE DELETED()=.F. 

   SELECT * FROM ZTEST INTO ARRAY Zjunk WHERE !DELETED() 

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in Visual FoxPro 5.0a and does not occur in Visual FoxPro 3.x.

MORE INFORMATION

Steps to Reproduce Behavior

1. Run the following code in a program file or line by line from the Visual FoxPro Command window:

   
         CLEAR
         SET SAFETY OFF
         USE HOME()+"samples\data\customer.dbf" EXCLUSIVE
         COPY TO HOME()+"Ztest.dbf" TYPE FOX2X
         SET SAFETY ON
         CLOSE ALL
         USE HOME()+"Ztest.dbf"
         DELETE ALL FOR RECNO() < 10
         USE
         SET DELETED ON
         SELECT * FROM HOME()+"Ztest" INTO ARRAY Zjunk
         ? ALEN(zjunk)
         USE 

Additional query words:

Keywords : kberrmsg kbVFp kbVFp500afix FxprgSet FxprgSql
Version : WINDOWS:5.0
Platform : WINDOWS
Issue type : kbbug